You do the sum(40) subtracted by 8, the answer from that divided by 2 since Erin's two times younger.
40-8=32
32÷2=16
Then if you want to check it you do the opposite and get the same sum(40) so 16×2=32 and 32+8=40

6 0

3 years ago

Anna divided a sheet of paper into 5 equal sections and colored 3 sections blue . What percent is that and it =60

Dimas [21]

Answer:

she colored in 60% of the paper blue and left 40% of the paper blank

Step-by-step explanation:

8 0

3 years ago

If every day I make 2 dollars and every time I reach 50 dollars it adds 25 cents to my daily income how many days will it take f

Vsevolod [243]

9514 1404 393

Answer:

659

Step-by-step explanation:

We assume the daily rate increases at each multiple of $50. When the balance reaches $50 on day 25, the pay on day 26 is $2.25.

Similarly, when the balance reaches 9628.75 on day 658, the pay will be $50 on day 659.

I found this easiest to solve using a computer program. A spreadsheet can do it by computing the number of days between raises. This is shown in the attachment.

3 0

3 years ago

A customer buys a diffrent book that has a original selling price of $38. the book is discounted for 25%. the coustomer must pay

sesenic [268]

$38*75% (the amount of the original price you pay) is $28.50
$28.50*1.06 (the cost of the book (100%) and the cost of the tax on top (6%)) is $30.21
The customer pays a total of $30.21 for the book

6 0

3 years ago